I ordered a Stowaway Bluetooth Keyboard and Mouse for my Dell Axim awhile ago, and they finally arrived today. Installation was relatively painless for a PocketPC peripheral and so far works like a charm.
Some folks have reported problems reconnecting one device when both devices are active, but so far everything’s worked with no problems. Having a mouse really enhances the PocketPC experience and eliminates the number one gripe I and others have with using keyboards with PDAs — having to take our hands off the keyboard to grab a stylus. Using a mouse is much more intuitive.
Pair this combo with something like a Dell X50V, and you’ve got a legitimate laptop replacement machine that can do a wide range of computing activities in an extremely small package (and will have the pathetic battery life of a laptop to boot!)